Name: CVE-2026-15789: Improper Limitation of a Pathname to a Restricted Directory
Creator: Rapid7
Published: 2026-07-21T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-15789, CWE-22, CVSS 7.5, EPSS 0.00314

A custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access the BuildKit control API to issue builds, e.g., bypass authentication, etc.

CVSS Details

CVSS 4.0 Base Score: 6.9 (MEDIUM)
CVSS 4.0 Vector: (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 7.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alma_linux	—	Upgrade buildah-testsUpgrade buildah	Oct 11, 2026	Sep 23, 2026
Amazon Linux Ami 2	—	Upgrade runfinch-finch	Oct 19, 2026	Oct 19, 2026
Amazon_linux_2023	—	Upgrade runfinch-finch	Sep 30, 2026	Jul 21, 2026
Oracle_linux	—	Upgrade buildah-testsUpgrade buildah	Oct 22, 2026	Jul 21, 2026
Redhat_linux	—	Upgrade buildah-tests-debuginfoUpgrade buildah-testsUpgrade buildahUpgrade buildah-debuginfoUpgrade buildah-debugsource	Sep 16, 2026	Jul 21, 2026
Rocky_linux	—	Upgrade buildah-debugsourceUpgrade buildah-debuginfoUpgrade buildahUpgrade buildah-testsUpgrade buildah-tests-debuginfo	Sep 28, 2026	Sep 24, 2026

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CVSS Details

Covered by Rapid7

Prioritize with Active Threat Intelligence